Retort



W. F. RIEGER June 19, 1930.

RETORI' Filed March 27; 1923 eoooee ll Patented June 10, 1930' UNITED STATES PATE T OFFICE WILLIAM F. RIEGER, OF SALT LAKE CITY, UTAH, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE STOKER MATIC CORPORATION, OF SALT LAKE CITY, UTAH, A CORPORATION or UTAH Application filed March 27, 1928. Serial No. 265,026..

My invention relates to furnaces and has for its object to provide a new and efficient retort, for feeding coal, or other fuels, to the flames and for consumation of the maximum amount of fuel, with the minimum amount of waste and trouble.

A further object is to provide a retort for the stoker type of furnace, which will not clog with the clinkers, and'which will consume all of the fuel introduced therein.

A still further object is to provide a water I cooled retort which will not burn out, or melt as quickly as has heretofore been the case with other types of retorts and one which will be more easily cleaned.

These objects I accomplish with the device illustrated in the accompanying draw ings, in which similar numerals and letters of reference indicate like parts, throughout ,the several-views, and as described in the specification forming a art of this application and pointed out in t e, appended claims.

In the drawings in which Ighave shown the best and most preferred manner of building my invention, Figure 1 is a side elevation of my invention. Figure 2 is a central longitudinal vertical section. Figure 3 is a plan view of the device.

In the drawings I have shown the retort as A, and the air chamber as B. I then .provide a blower (not shown) which forces air into the air chamber through the pipe 1, and a screw feed worm 2 forces the fuel into the retort through the feed pipe 3. The

t end of the feed pipe is welded into and formed integral with the lower or base side 4 of the retort and the extension side 5 is sloped upwardly, to introduce the fuel from the worm up to the retort. The said retort is made of tubular metal pipes 6, 7, 8 and 9, welded together at the corners where they join and each is provided with, air openings or slots 10,'in the inner side thereof, and plates 11 and 12, are :welded to the top and bottom sides of the said pipes, outside of the holes or slots 10, and encompassing them within the space between the plates, and the said plates are welded together at 13, forming a triangular shaped portion 14 of which the base is formed by the pipes. I then pronection with the boiler which the retort is heating (not shown) so that sufiicient water will be supplied to prevent the plates 11 and 12, and the pipes 15, from becoming overheated. Openings 17 are provided with closure plates 18, in the air chamber, so that it can be cleaned out after periods of use.

The operation of my invention is as follows:

Fuel is introduced. through the turning of the worm 2, forcing the fuel inwardly and upwardly, over the inclined base 5, into the draft above the air pipes or tubes 15, where it is ignited and the continued movement of the incoming coal does not allow the coal or fuel to coke or form clinkers around the edge ofthe retort, and the flow of water through the pipes 6, 7, 8, and 9, and between the plates 11 and 12, and around the tubes 15, prevents the retort from burning out, should the worm not be supplied with suflicient fuel to keep the fire above the edge of the said firebox.

Having thus described my invention, I desire to secure by Letters Patent and claim:

1. In a combustion device, means defining a retort, an enclosed air chamber therebeneath, tubes connecting said chamber with said retort, and means to cause water to circulate around said tubes in heat exchange relation thereto.

2. In a combustion device, plates defining a retort, other plates secured to said first mentioned plates at an angle thereto, means coacting with said plates to form an enclosed space between said several plates and said means, an air chamber below the retort, and

tubes passing through the said enclosed ing plates to form therewith an enclosed space, said hollow member bein in communication with the said enclose space, an air chamber below the retort, and tubes dis- 5 posed in said enclosed space to connect said retort with said air chamber. v

4. In a combustion device, a conduit member for water, plates secured thereto to form a retort, other plates secured to said conduit member and to said first-mentioned plates to form an enclosed space, said conduit member being in communication with said space, an air chamber below the retort, tapered tubes extending across said space, said tubes being in communication with said chamber and said retort, and means adapted to place said conduit member in communication with a water-containin member.

5. In an under ed furnace, a retort provided with a fuel passage, means for supplying fuel to the retort through said passage, a water jacket surrounding the retort, and air passages extending throu h said water jacket and communicating Wltll the retort. 6. In an underfed furnace, a retort provided with a fuel passage, means for supplying fuel to the retort through said passage, a water jacket surrounding the retort, an air chamber below the retort, and :0 air passages extending upwardly from the air chamber through the water jacket and communicating with the retort.

7 In an underfed furnace, a retort having a fuel supply passage, means for supplying fuel to the retort through said passage, an air chamber beneath the retort, a plurality of air tubes arranged between the air chamber and the retort, each tube communicating at one end with the air chamber and at its other end with the retort, and a water jacket surrounding said retort and said tubes.

In testimony whereof I have aifixed my signature.

WILLIAM F. RIEGER. 

